Ring Nebula (NGC 6822)
Encyclopedia
The Ring Nebula in Barnard's Galaxy has the official designation of Hubble 1925 III as it was the third (Roman numeral 3) object recorded in Hubble's
1925 paper, N.G.C. 6822, A Remote Stellar System. It includes areas of bright H II
emission. In Paul W. Hodge's
1977 paper it was designated Hodge 4.
Its appearance is very similar to the filamentary nebula found in the Large Magellanic Cloud
(see Meaburn 1981). It most resembles the circular ring-like nebula N70 in the LMC.
Edwin Hubble
Edwin Powell Hubble was an American astronomer who profoundly changed the understanding of the universe by confirming the existence of galaxies other than the Milky Way - our own galaxy...
1925 paper, N.G.C. 6822, A Remote Stellar System. It includes areas of bright H II
H II region
An H II region is a large, low-density cloud of partially ionized gas in which star formation has recently taken place. The short-lived, blue stars forged in these regions emit copious amounts of ultraviolet light, ionizing the surrounding gas...
emission. In Paul W. Hodge's
Paul W. Hodge
Paul W. Hodge is an American astronomer.He was born in Washington. He earned an undergraduate degree in Physics from Yale and a doctorate in Astronomy from Harvard. In 1965 he and George Wallerstein created the astronomy department at the University of Washington, and he has been a professor...
1977 paper it was designated Hodge 4.
Its appearance is very similar to the filamentary nebula found in the Large Magellanic Cloud
Large Magellanic Cloud
The Large Magellanic Cloud is a nearby irregular galaxy, and is a satellite of the Milky Way. At a distance of slightly less than 50 kiloparsecs , the LMC is the third closest galaxy to the Milky Way, with the Sagittarius Dwarf Spheroidal and Canis Major Dwarf Galaxy lying closer to the center...
(see Meaburn 1981). It most resembles the circular ring-like nebula N70 in the LMC.
External links
- Clayton, C.A. "The Dynamics of the giant ring nebula Hubble III in NGC 6822", Monthly Notices of the Royal Astronomical SocietyMonthly Notices of the Royal Astronomical SocietyMonthly Notices of the Royal Astronomical Society is one of the world's leading scientific journals in astronomy and astrophysics. It has been in continuous existence since 1827 and publishes peer-reviewed letters and papers reporting original research in relevant fields...
, vol. 226, May 15, 1987, p. 493-504